<template>
  <div>
    <!-- 面包屑导航区域-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域-->
    <el-card>
      <!-- 搜索及按钮区-->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input v-model="queryInfo.query" placeholder="请输入内容" clearable @clear="getGoodsList">
            <el-button @click="getGoodsList" slot="append" icon="el-icon-search"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button @click="goAddPage" type="primary">添加商品</el-button>
        </el-col>
      </el-row>
      <!-- table表格区-->
      <el-table :data="goodslist" stripe border>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column label="商品价格(元)" prop="goods_price" width="95px"></el-table-column>
        <el-table-column label="商品重量" prop="goods_weight" width="70px"></el-table-column>
        <el-table-column label="创建时间" prop="add_time" width="140px">
          <template slot-scope="scope">
            {{ scope.row.add_time*1000 | dateFormat}}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="130px">
          <template slot-scope="scope">
            <el-button @click="editList(scope.row)" size="mini" type="primary" icon="el-icon-edit"></el-button>
            <el-button @click="removeById(scope.row.goods_id)" size="mini" type="danger" icon="el-icon-delete"></el-button>
          </template>
        </el-table-column>


      </el-table>
      <!-- 分页栏区-->
      <el-pagination
          @size-change="handleSizeChange"
          @current-change="handleCurrentChange"
          :current-page="queryInfo.pagenum"
          :page-sizes="[5, 10, 15, 20]"
          :page-size="queryInfo.pagesize"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total"
          background>
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  name: "List",
  data(){
    return {
      // 定义查询参数
      queryInfo:{
        query:'',
        pagenum:1,
        pagesize:10
      },
      // 商品列表
      goodslist:[],
      // 总商品条数
      total:0,
      //
    }
  },
  created() {
    this.getGoodsList()
  },
  methods:{
    // 根据分页获取对应的商品列表
    async getGoodsList(){
      const {data:res} = await this.$http.get('goods',{params: this.queryInfo})
      if (res.meta.status !== 200){
        return this.$message.error('获取商品列表失败！')
      }
      this.$message.success('获取商品列表成功！')
      // console.log(res.data);
      this.goodslist = res.data.goods
      this.total = res.data.total
    },
    // pagesize改变后的重新刷新
    handleSizeChange(newSize){
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    // 页码值pagenum改变后的重新刷新
    handleCurrentChange(newPage){
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    // 根据id删除对应的商品
    async removeById(id){
      const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
        // 捕获所有报错，并直接return，下行箭头函数省略了return
      }).catch(err => err)
      // 这时，如果用户确认删除，返回得字符串为confirm
      // 如果用户取消删除，返回的字符串为cancel
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除!')
      }
      // 调用接口，真正发起请求
      const {data:res} = await this.$http.delete(`goods/${id}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除参数失败！')
      }
      this.$message.success('删除参数成功！')
      this.getGoodsList()
    },
    // 跳转到添加商品页面
    goAddPage(){
      this.$router.push('/goods/add')
    },
    // 商品修改
    editList(row){
      // console.log(row);
      this.$router.push(`/goods/edit/${row.goods_id}`)
    }
  }
}
</script>

<style lang="less" scoped>

</style>